Metals like iron, aluminium, zinc do not react with hot/cold water. They react with water only when water is in the form of steam. 3Fe + 4H₂O → Fe₃O₄ +4H₂

We must know that – the rays parallel to the principal axis, after refraction by convex lens, will pass through the principal focus. And the incident rays coming from the distant object will be parallel to the principal axis. Hence, ...

Class X Science MCQ Extra Questions Answers 10th Science Terminal Exam Based MCQ Extra Questions Class 10 Science Terminal Exams MCQ Solutions Class 10th Science Session 2022-23

Our eyes have functioned very crucial work. It has simple organs to focus the objects. Lens (crystalline) which provides the length adjustment (focal length for focus the object and remaining the blur) which is required to focus the objects at ...

Class 10 Science Terminal Exams MCQ Solutions Class X Science MCQ Extra Questions Answers 10th Science Terminal Exam Based MCQ Extra Questions Class 10th Science Session 2022-23